The distance from side to side and through the centre of a circle or a round object
Diameter
To look steadily at something for a long time
Gaze
the force that pulls things toward earth
Gravity
The condition of being serious
Gravity
In addition or also
Besides
To think carefully about something
Reflect
A stage or step in a series
Degree
The study of planes, stars and space
Astronomy
All of space and all the objects in space
Universe
A hole in the shape of a bowl found in the ground of at the mouth of a volcano
Crater
An object that makes distant things seem closer and larger. It does this by using mirror and lenses
Telescope
A unit for measuring how warm something is
Degree